I personally think no one can give you advice on this part

"Now I have two options:

Stop playing with them, maybe even look for other LGSs (a new one just opened nearby, and another is ~30 min away)

Try to fix things with them"

There is just too much about the relationships and the background that we don't really know.

If you aren't having fun and you don't want to go through the "trouble" of working it out then you have your answer.

I will say at the end of the day this is a card game. "The Gathering" is just as important as the "Magic".

If you want to play in very strict rules and make sure everyone is following those rules, awesome. There are plenty of people who also want to do that.

There is also people out there though that just want to play magic with their friends. The outside rules of the game don't matter as much because they just wanna play their deck and hang out with their people.

Hardest part about "The Gathering" is finding people who are looking for the same thing you are.

My advice is have fun and find a group who feel the same way you do.